Switch-actuating mechanism.



G. A. vFRITSCH. SWITCH AGTUAUNG MEcHANlsM.

APPLICATION FILED AUGJ'. 1911.

Patented Apr. 30,1918.

2 SHEETS-SHEET I.

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GEORGE ARTHUR FRITSCI-I, OF RENFBEW, ONTABlO, CANADA.

SWITCH-ACTUATING MECHANISM.

Specification of Letters Patent. Pijenteddpl. 30, 1918.

Application filed August 4, 1917. Serial No. 184,510.

To all fio/wm t may concern.'

Be it known that l, GEORGE A. Fnrrscri, a subject of the King of Great Britain, and resident of the town of Renfrew, in the Province of Gntario, in the Dominion of Canada", have invented certain new and useful Improvements in Switch-Actuating Mechanism, of which the following is a specification.

This invention relates to improvements in electric switches of the clock operating type, such as described in my United States Patent No. 1207 531, and the Iobjects of the invention are to facilitate automatically resetting the switch, to simplify the arrangement of the several parts, so that they may be readily open to inspection and repair, and generally to adapt the several parts to better perform the functions required of them.

For having a complete understanding of my invention reference is made to the accompanying drawings in which:

Figure 1 is a fragmentary sectional elevation of the casing showing the location of the switch.

Fig. 2, is a transverse section of the same.

Fig. 3is a fragmentary front elevation of the casing.

Fig. 4 is a diagrammatic view of the plunger and ratchet key.

Like characters of reference refer to like parts in the several figures.

Referring to the drawings, A represents the improved switch comprising the casing 10 adapted to house the mechanism.

The switch is designed to be actuated by a clock, the shaft 11 of which extends into the casing 10 and is provided with the pinion 12, adapted to mesh with the pinion 13 carried by the spindle 9. This spindle is provided on the outer end with a hand 14, superimposed on a dial 15 which is carried by a sleeve 17 surrounding the spindle 9, and on this sleeve the pinion 13 is mounted. A hand 16 is mounted on the end of the sleeve 17 and is superimposed on the dial 15, which in the embodiment illustrated consists of two concentric circles, on which are engraved the numbers 1-12, the large hand 14 being designed to indicate when the switch is to be closed, while a smaller hand 16 is designed to indicate ,when the contact is to be broken.

On the spindle 9, a lever i9 is mounted and provided with a spring-controlled pawl 20 adapted to engage with the disk 21, mounted on the pinion 13, while a second lever 22 is mounted on the spindle 9, di-V rectly opposite the lever 19, and is also provided with a springcontrolled pawl 23 adapted to engage with the said ratchet disk.

lBelow the spindle 9 a casing 24 is rotatably mounted on the spindle 25 and in this casing a coil spring 26. is located, having its inner end attached to the spindle, while its outer end is connected to the inner periphery of the casing, and this casing is provided with a peripheral recess 27, adapted to engage with the spring-controlled pawl 28, mounted on thecasing 10. rllhe casing 24 is further provided with the lever 29 offset at the upper end as shown at 30 and into this lever a rod 31 extends, and is connected at one end to the arm 32 of the spring-controlled pawl 33 carried by the casing.

ThatV end of the rod 32 projecting through the arm 29 is provided with a pin 34, so that as the armr29 moves backwardly and forwardly, it will release and reset the pawl 33 in amanner to be made clear hereafter.

Rotatably mounted on the spindle 25 is a casing 35 housing a spiral spring 36, the inner end of which is secured to the said spindle, while the outer end is connected to the inner periphery of the casing, and this casing is provided with an integral arm 37 having a recess 38 in the upper end adapted to co-act with the pawl 33.

This arm is designed to engage with the plunger 39 which operates the key 40, and opens or closes the circuit, in which the switch is installed. The upward movement of the arm 37 of the casing 35 is limited by a 'pin 41, carried by the casing 24 adjacent to which' the casing 35 is mounted.

When this switch isin use, the hand 14 is set at the. hour to which the key 40 is to be closed, and the hand 16 is set at the hour at which the circuit is to be broken, and the clock shaft 11 will transmit Vits motion pressed condition, As the. clock spindle continues in its motion the lever 22 is ultimately brought int-o contact with the oiiilset end of the arm 29, so rotating the casing 2li, in a counterclockwise direction, and when the levei` 29 engages with the pin 34, a rocking motion is transmitted through the arm 32 to the pawl 33, so releasing the arm 37 which will be rotated haclwardly under theJ action of the spring 36, until the said arm engages with the pin el.

The switch is now reset and the above operation will he repeated automatically every 24 hours. `When the casing 24 is rotated in the clockwise direction the pawl 28 reengages the. recess 27 holding the casing' Qi with the arm 37 in its upward position, until further operation of the switch takes place.

From this description it will be. seen that l have invented 'a switch, which can be advantageously utilized in conjunction with my improved switch shown in United States lDatent No. 1,207,531, and in which the switch will be automatically reset at pre-determined intervals.

As many changes could be made in the above description and many apparently widely diiierent embodiments of my invention within the scope of the claims constructed without departing from the spirit or scope thereof, it is intended that all matter contained in the accompanying specification and drawings shall be interpreted as illustrative and not in a limited sense.

That l claim as my invention is:

l. In a switch of the class described, a pivotally mounted casing, an arm on the casing having an offset end, a second casing pivotally mounted to the iirst said casing, resilient means controllingl the operation of first said casing, an arm on the second casing, a pin limiting the movement of the arm, and clock means designed to control the rotations of the first casing.V

2. ln a switch of the class described, a pivotally mounted casing, resilient means for rotating the casing, a second casing lo'- cated adjacent to the first casing, and provided with an integral arm, a pin on the irst casing controlling the operations of the arm, an arm on the first casing having an offset end, a pawl engaging with the first arm actuated by the second arm, a pawl controlling the movement of the lirst casing and clock means for liberating the second Y pawl.

ln witness whereof I have hereunto set my hand in the presence of two witnesses. GEGRGE ARTHUR FRITSCH. lWitnesses z EDNA MATHinsoN, ERNEST J. STEWART.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of` Patents,

washington, n. c. 

